C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

k40 relay

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Old Feb 4, 2012 | 11:01 PM
  #1  
sammydragon3's Avatar
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From: chicago
2005 c230 kompressor 2003 s500 94 wrangler
k40 relay

the dealership said i need a new supercharger bypass valve. i read on a partsgeek.com that this relay controls secondary air injection which is the supercharger valve right?

i got a p0060 code..which i think is a blown fuse or relay

thank you any help would be great

Part Number: W0133-1794938
Notes: This relay is used for various functions in different models such as Auxiliary Cooling Fan, Comort Control, Automatic Transmission, Secondary Air Injection, Terminal 15R, Terminal 15R2B, etc
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Old Feb 5, 2012 | 02:45 AM
  #2  
SunnyRayToronto's Avatar
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From: Toronto, Ontario, Canada, eh!
2003 C230 Sports Coupe, Paprika Metallic Red, Auto, Pano, Leather
I think you have the wrong part number.

What colour is the relay? Black, Grey or Yellow?
What size? Big or Small?

Some common relay found my CL203 coupe are:
Black big A002 542 13 19
Black small A002 542 11 19
A002-542-26-19 Grey big?
A002-542-14-19 Yellow big?
A002-542-12-19 Yellow small?
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Old Feb 5, 2012 | 07:34 AM
  #3  
Glyn M Ruck's Avatar
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Secondary air injection is the pump that blows air into the exhaust under cold start conditions to improve emissions.
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Old Feb 5, 2012 | 11:42 AM
  #4  
sammydragon3's Avatar
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From: chicago
2005 c230 kompressor 2003 s500 94 wrangler
its small and black

how do u know if a relay is blown?
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Old Feb 6, 2012 | 11:55 PM
  #5  
SunnyRayToronto's Avatar
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From: Toronto, Ontario, Canada, eh!
2003 C230 Sports Coupe, Paprika Metallic Red, Auto, Pano, Leather
On the internet you can find instructions and demos on how to test a relay.

Best way to test your particular relay is to switch it out with another car that uses the exact same relay (ie: same Mercedes Part number: Black small A002 542 11 19). But this particular small black relay should be quite common in your car,... there should be about 5 of them in your front, side and back fuse box,.... so just switch them around and see if it fixes the issue you're experiencing.

Also search for a relay map so you have an idea of which relay you're switching.
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